Corrosion test meter



FIG. 1 is a top and right front perspective view of a corrosion test meter showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a corrosion test meter, as shown and described. 